| Brønsted酸性离子液体催化合成聚甲醛二甲醚的研究 |
| |
| 引用本文： | 赵强,李为民,陈清林. Brønsted酸性离子液体催化合成聚甲醛二甲醚的研究[J]. 燃料化学学报, 2013, 41(4): 463-468 |
| |
| 作者姓名： | 赵强 李为民 陈清林 |
| |
| 作者单位： | 1. School of PetroChemical Engineering, Changzhou University, Changzhou 213164, China;2. School of Chemistry and Chemical Enginerring, Sun Yat-Sen University, Guangzhou 510275, China |
| |
| 基金项目： | 江苏省精细石油化工重点实验室开放课题(KF0808);江苏省科技厅工程技术中心建设项目(BM2010095,BM2010132) |
| |
| 摘 要： | 合成并表征了两种Brønsted酸性离子液体N-甲基-2吡咯烷酮硫酸氢盐([Hnmp]HSO4)和N-甲基-2吡咯烷酮对甲苯磺酸盐([Hnmp]PTSA),对两种离子液体在由甲缩醛和多聚甲醛缩合制备聚甲醛二甲醚(DMMn,n > 1)反应中的催化性能进行了研究.结果显示,离子液体的催化活性与其酸性相关,离子液体[Hnmp]HSO4具有较高的催化活性;当离子液体[Hnmp]HSO4 的用量为2.0%(质量分数)、m(甲缩醛)/m(多聚甲醛)= 2.00、反应温度110℃、反应时间6 h时,甲缩醛的转化率和DMM3~8 的选择性分别为52.28%和49.18%.反应结束后,离子液体[Hnmp]HSO4与产物自动分成两相,且该离子液体的稳定性好,重复使用五次后仍有较高的催化活性.
|
| 关 键 词： | 离子液体 甲缩醛 多聚甲醛 聚甲醛二甲醚 |
| 收稿时间： | 2012-10-15 |
Synthesis of poly(oxymethylene) dimethy ethers catalyzed by Brønsted acid ionic liquids |
| |
| ZHAO Qiang,LI Wei-min,CHEN Qing-lin. Synthesis of poly(oxymethylene) dimethy ethers catalyzed by Brønsted acid ionic liquids[J]. Journal of Fuel Chemistry and Technology, 2013, 41(4): 463-468 |
| |
| Authors: | ZHAO Qiang LI Wei-min CHEN Qing-lin |
| |
| Affiliation: | 1.School of PetroChemical Engineering,Changzhou University,Changzhou 213164,China; 2.School of Chemistry and Chemical Enginerring,Sun Yat-Sen University,Guangzhou 510275,China) |
| |
| Abstract: | Two kinds of Brønsted acid ionic liquids ([Hnmp]HSO4, [Hnmp]PTSA) were synthesized and characterized; their catalytic activity in the synthesis of poly(oxymethylene) dimethyl ethers (DMMn, n > 1) by the condensation of dimethoxy methane (DMM) and paraformaldehyde (PF) were also investigated. The results showed that the catalytic activity of ionic liquid was related to its acidity, [Hnmp]HSO4 has higher catalytic activity; the optimum reaction conditions were found as [Hnmp]HSO4 amount of 2.0%(mass fraction), feed mass ratio m(DMM)/m(PF) of 2.00, temperature 110℃ and reaction time 6 h, the conversion of DMM and selectivity to DMM3~8 reached 52.28% and 49.18%, respectively. The ionic liquid [Hnmp]HSO4 can be naturally separated from product phase and exhibits high stability upon reusage; it still remained highly active even after being reused for five times. |
| |
| Keywords: | ionic liquid dimethoxy methane paraformaldehyde poly(oxymethylene) dimethy ethers |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《燃料化学学报》浏览原始摘要信息 |
|
点击此处可从《燃料化学学报》下载全文 |
|
